python docstring example

In the previous article, we introduced a general description of the Python regular expression of the bodysuits, in fact Regular Expressionsis a special sequence of characters that can help you conveniently check whether a string matches a pattern. Python has added the RE module since version 1.5, which provides a Perl-style regular expression pattern. The RE module enables the

This example describes the use of Python callback functions. Share to everyone for your reference. The specific analysis is as follows: One, Baidu encyclopedia on the callback function explanation: A callback function is a function called by a function pointer. If you pass the pointer (address) of a function to another function as an argument, when the pointer is used to call the function it points to, we

resaon attribute containing the error code and error message. The following code is used to test the effect; import urllib import urllib2 url = 'http://www.server.com/register.php' user_agent = 'Mozilla/5.0 (Windows NT 6.1; rv:33.0) Gecko/20100101 Firefox/33.0' values = {'useid' : 'user', 'pwd' : '***', 'language' : 'Python' } headers = { 'User-Agent' : user_agent } data = urllib.urlencode(values) req = urllib2.Request(url, data, headers) r

functions are written to test the inheritance and polymorphism of classes in Python#Write a animal class, which has a run methodclassAnimal (object):defRun (self):Print "Animal is running ..."#write a cat and dog class inheriting from the animal classclassCat (Animal):defRun (self):Print "Cat is running ..." defEat (self):Print "Cat is eating ..."classDog (Animal):defRun (self):Print "Dog is running ..." defEat (self):Print "Dog is eating ..."t

As we all know, Python's parallel processing capability is not ideal. I think that if we don't consider the standard parameters of threads and Gil (most of them are legitimate), the reason is not that the technology is not in place, but that we are not using the appropriate method. Most of the textbooks on Python threads and multiple processes are excellent, but the content is tedious. They do have a lot of useful information at the beginning, but oft

be sent after verifying that the user information is legitimate.Smtp.sendmail (From_addr, To_addrs, msg[, Mail_options, Rcpt_options])Send the message. Notice here that the third parameter, MSG, is a string that represents the message. We know that the mail is generally composed of the title, sender, recipient, mail content, attachments, etc., when sending mail, pay attention to the format of MSG. This format is the format defined in the SMTP protocol. In the above

The example in this article describes threading Hyper-threading usage in Python. Share to everyone for your reference. The specific analysis is as follows: Threading Java-based threading model design. Locks (lock) and condition variables (Condition) are the basic behavior of objects in Java (each object has its own lock and condition variable), while in Python i

the directory to createMkpath= "D:\\qttc\\web\\"# Call functionmkdir (Mkpath) The above is a function that I wrote, only need to pass in you want to create the full path of the directory.DescriptionIn the above demo's function, I did not use the Os.mkdir (path) function, but used the Multi-layer creation directory function os.makedirs (path). The biggest difference between the two functions is that os.mkdir (path) is not created when the parent directory does not exist, and os.makedirs

In this article, we'll look at the python dictionary function , where I'll explain the python type function and how it works. Well, don't say much, let's get into the article. What is the Python type function? Describe The Python Dictionary (Dictionary) type () function returns the type of the input variable and

This example describes the use of Python under MySQLdb. Share to everyone for your reference. The specific analysis is as follows: Download and install MySQLdb ①linux version http://sourceforge.net/projects/mysql-python/download, in the installation is to first install Setuptools, and then in the download file directory, modify Mysite.cfg, Specify the path to th

Hexadecimal encoding is also a common encoding solution in web applications. As a web security engineer, we are aware that MySQL injection can be bypassed using hex.htmlspecialchars()Function to write data to webshell. For example: select 0x3c3f70687020406576616c28245f504f53545b615d293b203f3e into outfile '/web/1.php' The following describes how to implement hex encryption and decryption in python: >>> '

Example Analysis of range () function usage in python development, pythonrange This article describes the usage of the range () function in python development. We will share this with you for your reference. The details are as follows: The range () function in python is very powerful, so I think it is necessary to shar

Python keyword module usage Example Analysis, pythonkeyword This example describes how to use the python keyword module. Share it with you for your reference. The details are as follows: Help on module keyword:NAME keyword - Keywords (from "graminit.c")FILE /usr/lib64/python2.6/keyword.pyDESCRIPTION This file is aut

= ' righttxthead ' >aft = Re.findall (tmp_reg,content)For url_1 in aft:#继续进入下层地址Content1=get_url (' http://xxxx ' +url_1)# Matching here took a lot of time, there is time to continue to tidy up!#tmp_reg1 = ' TMP_REG1 = ' #. +--this is greed. *? The non-greedy PHP words are/reg/u with whether add U to distinguish# Print Content1# match with FindAll, similar to PHP's preg_match_all but not the same, especially the array structure that returns the resultaft_1 = Re.findall (tmp_reg1,content1)#!!!!!

Use the Python Flask framework to construct the structure example of a large Web application, pythonflask Although small web applications can be easily expanded with a single script, this method cannot be well expanded. As the application becomes more complex, processing in a single large source file becomes more and more problematic. Unlike most other web frameworks, Flask does not have a specific way of o

This article brings you a detailed description of the multi-process in Python (code example), there is a certain reference value, the need for friends can refer to, I hope to help you. This section is about learning Python's multi-process. One, multi-process and multi-threaded comparison Multi-process Multiprocessing and multi-threaded threading similar, they are used in

The following is an example of how to use Python to call the System Shell in Linux. You need to directly call Shell commands to complete some simple operations, such as mount a file system. So how can we use Python to call Linux Shell commands? The following describes several common methods:1. OS Module 1.1. exec method family of OS ModuleThe exec System Method o

independent.As an example of a Debian Linux installation (although I use it on Windows): Copy the Code code as follows: sudo apt-get install python-numpy python-scipy python-matplotlib ipython ipython-notebook python-pandas python